Add in docs from https://github.com/AsyncDisplayKit/Documentation

docs/static/linkify.js

@@ -0,0 +1,22 @@
+[].slice.apply(
+  document.querySelectorAll(
+    'article h2, article h3, article h4'
+  )
+).forEach(function(header) {
+  var slug = header.innerText
+    .toLowerCase()
+    .replace(/[^a-z0-9]/g, '-')
+    .replace(/-+/g, '-')
+    .replace(/^-|-$/g, '');
+
+  var hashref = document.createElement('a');
+  hashref.id = slug;
+  hashref.className = 'hashref';
+  header.appendChild(hashref);
+
+  var hash = document.createElement('a');
+  hash.className = 'hash';
+  hash.href = '#' + slug;
+  hash.innerText = '#';
+  header.appendChild(hash);
+});